What if another species eats a 1080 bait?
There is a small chance that other species will eat the bait before a fox finds it. To decrease the chance that this happens, baits are buried at certain depths. The poison in baits, sodium fluoracetate or 1080, is found in Australian plants. Therefore, native species have a higher tolerance to 1080, especially on the west coast where plants with 1080 are more abundant. Most baits contain 3 mg 1080, which is highly lethal to an adult fox but usually not to native species (see table below for information on lethal dose for different species).
Lethal dose of 1080 for different native and introduced species. 1080 is not cumulative. And a human would have to eat 40 to 80 baits depending on there weight (Animal Control Technologies Australia).
Here are some interesting examples of calculations detailing the risks to humans and wildlife:
• One of the risks of 1080 use is the leaching of the 1080 from the impregnated baits due to rainfall. If an area were heavily poisoned using 8 kg of 6 mg wild dog baits per hectare (containing 48 mg of 1080 per kg of bait), and all of this was leached out due to 50 mm of rain, an individual person would need to drink 169 271 L of contaminated water before receiving a lethal dose.
• If a hunter shot a 60 kg feral pig that was in the latent period following ingestion of 3 kg of 1080 bait (at a rate of 1152 mg 1080/kg), and based on the unlikely assumption that half the ingested poison has become evenly distributed through the carcass, that hunter would need to eat 36.1 kg in one sitting before being at risk (Department of Agriculture, Fisheries and Forestry, Biosecurity Queensland).